diff options
Diffstat (limited to 'perlvars.h')
| -rw-r--r-- | perlvars.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/perlvars.h b/perlvars.h index 7bafa40882..40f5072b35 100644 --- a/perlvars.h +++ b/perlvars.h @@ -237,3 +237,16 @@ PERLVAR(G, malloc_mutex, perl_mutex) /* Mutex for malloc */ PERLVARI(G, hash_seed_set, bool, FALSE) /* perl.c */ PERLVARA(G, hash_seed, PERL_HASH_SEED_BYTES, unsigned char) /* perl.c and hv.h */ + +/* The infinity. Used if no suitable definition is found in <math.h>. + * Note: many older places (like HP-UX 10.X) define HUGE_VAL + * as DBL_MAX (or LDBL_MAX for long doubles). Therefore HUGE_VAL + * is not a suitable replacement for infinity. + * + * The division by zero might warn with some compilers. */ +PERLVARIC(G, infinity, NV, (NV)1.0/0.0) + +/* The not-a-number. Used if no suitable definition is found in <math.h> + * + * The division by zero might warn with some compilers. */ +PERLVARIC(G, nan, NV, (NV)0.0/0.0) |